CODES

31
2

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#define BLYNK_PRINT Serial    

#include <SPI.h> 

#include <ESP8266WiFi.h> 

#include <BlynkSimpleEsp8266.h> 

#include <SimpleTimer.h> 

#include <DHT.h> 

#define BLYNK_PRINT Serial 

#include <OneWire.h> 

#include <DallasTemperature.h> 

#define ONE_WIRE_BUS D2 

OneWire oneWire(ONE_WIRE_BUS); 

DallasTemperature sensors(&oneWire); 

 

char auth[] ="----------------";               //Authentication code sent by Blynk 

char ssid[] = "-------";                       //WiFi SSID 

char pass[] = "-------";                       //WiFi Password 

 

#define sensorPin D3  

int sensorState = 0; 

int lastState = 0; 

#define DHTPIN 2     

#define DHTTYPE DHT11      

DHT dht(DHTPIN, DHTTYPE); 

SimpleTimer timer; 

void sendSensor() 

{ 

  float h = dht.readHumidity(); 

  float t = dht.readTemperature(); 

 

  if (isnan(h) || isnan(t)) { 

    Serial.println("Failed to read from DHT sensor!"); 

    return; 

  } 

  

  Blynk.virtualWrite(V5, h);  //V5 is for Humidity 

  Blynk.virtualWrite(V6, t);  //V6 is for Temperature 

} 

void setup() 

{ 

  Serial.begin(9600); 

  Blynk.begin(auth, ssid, pass); 

   pinMode(sensorPin, INPUT); 

  dht.begin(); 

 

  timer.setInterval(1000L, sendSensor); 

  Serial.begin(115200); 

  Blynk.begin(auth, ssid, pass); 

   sensors.begin(); 

} 

int sensor=0; 

void sendTemps() 

{ 

sensor=analogRead(A0); 

sensors.requestTemperatures(); 

float temp = sensors.getTempCByIndex(0);  

Serial.println(temp); 

Serial.println(sensor); 

Blynk.virtualWrite(V1, temp); 

Blynk.virtualWrite(V2,sensor); 

delay(1000); 

} 

void loop() 

{ 

  Blynk.run();  

  timer.run();  

  sendTemps(); 

  sensorState = digitalRead(sensorPin); 

Serial.println(sensorState); 

 

if (sensorState == 1 && lastState == 0) { 

  Serial.println("needs water, send notification"); 

  Blynk.notify("Water your plants"); 

  lastState = 1; 

  delay(1000); 

//send notification 

     

  }  

  else if (sensorState == 1 && lastState == 1) { 

    //do nothing, has not been watered yet 

  Serial.println("has not been watered yet"); 

  delay(1000); 

  } 

  else { 

    //st 

    Serial.println("does not need water"); 

    lastState = 0; 

    delay(1000); 

  } 

   

  delay(100); 

}